ZigBee technology-based pulsed eddy current nondestructive detection system

Abstract

The invention relates to a ZigBee technology-based pulsed eddy current nondestructive detection system, and belongs to the technical field of nondestructive detection and evaluation. The system comprises probes, a signal conditioning circuit, a power amplifier, a controller, a routing node, a coordination node and a host computer. The detection system generates a pulse width modulation waveform through the controller, the pulse width modulation waveform is amplified by the power amplifier to drive an excitation coil, a sensor part collects the synthetic magnetic field of a secondary magnetic field and an original magnetic field and converts the synthetic magnetic field into an electrical signal, and the electric signal goes through the signal conditioning circuit, and undergoes analog-to-digital conversion in the controller. The controller is connected with the routing node, the routing node communicates with the coordination node, the coordination node transmits acquired synthetic magnetic field data information to the host through serial communication, and the information is stored, analyzed and displayed. The system can online detect the defects and the damage condition of a test piece; and a wireless communication technology adopted in the invention simplifies the complicated connection between a workshop and the host computer and reduces the cost.

Description

technical field [0001] The invention relates to a pulsed eddy current nondestructive testing system based on ZigBee technology, which belongs to the technical field of nondestructive testing and evaluation. Background technique [0002] A large number of parts are produced every day on the assembly line of the workshop, and some substandard products are mixed with them. At present, the main inspection method is to gather these newly produced parts and get them to the inspection department for inspection. This inspection method is time-consuming, labor-intensive and inefficient. With the rapid development of computer technology, microelectronics technology and information management technology, automatic detection technology is gradually moving from centralized to decentralized, networked, intelligent and integrated. [0003] The wireless sensor network system is an important part of the industrial production process. It can not only realize remote monitoring, but also ensur...

AI Technical Summary

Problems solved by technology

At present, some people propose to use GPRS wireless transmission method to remotely obtain the defect and damage data of production parts in the workshop. Although the complicated connection problem of wired communication is overcome, GPRS is charged according to the flow rate, and the terminal scale is large, so the long-term use cost is bound to be high.

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